Examples of OBT rubber seals and custom molded components
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O-Ring Weight Calculator

Estimate O-Ring Weight from Size and Density

Enter the inside diameter, cross-section diameter and actual compound density. The estimate assumes an undeformed, circular-section O-ring and excludes coatings and manufacturing variation.

Weight (g) = π² × (inside diameter + cross-section diameter) × cross-section diameter² × density ÷ 4000. Use dimensions in millimetres and density in g/cm³.

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Suzhou Obtiv Technology Co.,LTD

No.211 Zhujiang Road, Suzhou City, China